Umm....The guy likes the sound of 70's speakers? Is that so hard to grasp? Thats what makes him happy....he doesnt care what makes you happy. Looking at your posts everything is about You You You and its your way or the highway. Well guess what??
JBL Monitors are the obvious choice to get the "70's" sound if thats what your after. These were the speakers used in almost every studio to create the albums from that time period...hence the term "Studio Monitors". So THIS is the sound as was intended at the time of the creation of the music. How do you get more truthful and accurate as that?
I have the L166 and they were completely restored to Spec by MILLERSOUND who is famous for their restoration services for vintage speakers. I find them paired with other JBL monitors with better midrange to be a great combination (4312A, 4412 etc). L166 have great highs but definitely leave something to be desired in the mids....to my ears. Im sure the 15K JBL 4367 Horns are amazing. My buddy had them but then upgraded to the AG Duo Mezzo and the 4367 left the building.